Transformers Material used for construction of transformer core is usually Silicon steel Copper Wood Aluminium Silicon steel Copper Wood Aluminium ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 50% 65% 80% 95% 50% 65% 80% ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Air motor Shunt motor Synchronous motor Induction motor Air motor Shunt motor Synchronous motor Induction motor ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 9.6 0.4 4 0.96 9.6 0.4 4 0.96 ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to load changes mechanical vibrations oil in the transformer magnetostriction load changes mechanical vibrations oil in the transformer magnetostriction ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. Square of thickness of core lamination The supply frequency The flux density in the core Thickness of core lamination Square of thickness of core lamination The supply frequency The flux density in the core Thickness of core lamination ANSWER DOWNLOAD EXAMIANS APP
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